Champagne Problems

Credits

• Cory Bice
  engineer
• David Bukovinszky
  cello
• Jeremy Lertola
  engineer
• Johan Carlsson
  keyboard, producer, programming, strings
• John Hanes
  engineer
• John Ryan
  producer
• Katy Perry
  lead vocals
• Mattias Bylund
  strings, synthesizer
• Mattias Johansson
  violin
• Nils-Petter Ankarblom
  strings, synthesizer
• Peter Karlsson
  lead vocals
• Rachael Findlen
  engineer
• Sam Holland
  engineer
• Serban Ghenea
  mix